!Yang:

All magic has it source in certain supernatural attributes that have flowed from the gods into nature itself: darkness, divinity and the 4 elements, earth, wind, fire and water. Through them magic obtains its ability to influence and interact with the physical world. You can leam to reinforce your magic by using these attributes, even bestowing them onto weapons and armor to make yourself more powerful.

Each attribute has a natural opposite against which it is even more effective — use that knowledge strategically to gain a major advantage in battle!